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Mesoscale Discussion 153
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   MESOSCALE DISCUSSION 0153
   NWS STORM PREDICTION CENTER NORMAN OK
   0939 PM CST WED FEB 24 2016

   AREAS AFFECTED...PORTIONS OF THE MID-ATLANTIC AND SOUTHERN NEW
   ENGLAND

   CONCERNING...TORNADO WATCH 28...30...

   VALID 250339Z - 250445Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 28...30...CONTINUES.

   SUMMARY...THE THREAT FOR A FEW INSTANCES OF WIND DAMAGE/STRONG WIND
   GUSTS CONTINUES THIS EVENING.

   DISCUSSION...A BROKEN BAND OF THUNDERSTORMS /WITH WEAK EMBEDDED
   MESO-VORTICES NOTED/ CONTINUES TO SPREAD EASTWARD THIS
   EVENING...AIDED BY FORCING FOR ASCENT IN THE LEFT-EXIT REGION OF A
   POWERFUL UPPER JET. WHILE RECENT REPORTS ALONG THE LINE HAVE
   INDICATED SUB-SEVERE GUSTS GENERALLY AROUND 40-50 MPH...THE THREAT
   FOR A FEW POCKETS OF WIND DAMAGE CONTINUES...ESPECIALLY WHERE
   LOW-LEVEL STABILITY HAS WEAKENED WITH SFC TEMPS RISING INTO THE 60S.
   ADDITIONALLY...CONVECTION HAS DEVELOPED TO THE EAST ACROSS EASTERN
   NJ...SOUTHEASTERN NY...AND CT WITHIN A WARM-AIR ADVECTION REGIME
   ENHANCED BY AMPLE LOW-LEVEL SLY FLOW. WHILE MOST OF THESE CELLS
   APPEAR ROOTED ABOVE A STABLE LAYER...THE STRENGTH OF SLY FLOW ALOFT
   /WITNESSED IN KDIX AND KOKX VWP DATA/ AND THE RELATIVELY SHALLOW
   NATURE OF THE LOW-LEVEL INVERSION SUGGEST THAT STRONG WINDS MAY
   OCCASIONALLY REACH THE SURFACE...VIA PRECIPITATION-DRAG PROCESSES.

   ..PICCA.. 02/25/2016


   ATTN...WFO...BOX...OKX...ALY...PHI...BGM...

   LAT...LON   41427500 41587452 41667293 41347246 40867267 40477359
               40107409 39497473 39357500 39497525 39847526 40707505
               41427500 

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Page last modified: February 25, 2016
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